The phrase "free of concerns" is correct and usable in written English.
It can be used to describe a state of being without worries or anxieties.
Example: "After a long vacation, I finally feel free of concerns and ready to tackle my work again."
Alternatives: "without worries" or "untroubled by issues".
Each of those drugs, like potassium chloride, can be administered free of concerns about poisoning scavengers.
And those, they say, have been increasingly free of concerns about crime.
Revenue sharing, luxury tax, steroids, contraction, all of these topics and more had to be hashed out, corralled and placed neatly in a package so that baseball and its primary ingredients, the players, could sail through the season free of concerns that the season would screech to a halt prematurely.
Feeding studies (where alcohol is experimentally administered) free of concerns about confounding may help to elucidate the mechanisms by which alcohol affects cardiovascular disease.
I can make this prediction free of concern about whether cell-phone use is truly carcinogenic.
There are difficult and peculiar coordinations I pull off because they are spontaneous and free of concern for effect or technique.
The great politeness is free of formality; perfect conduct, free of concern.
-JEAN DE BAF The great politeness is free of formality; perfect conduct, free of concern.
Though marijuana remains illegal under federal law, the memo allowed companies following state cannabis laws to conduct business relatively free of concern about arrest.
Those who remember the Snowden brothers describe them as "informal", "spontaneous", "creative", and "relatively free of concern over ownership" of their songs.
Exemplars of this type are characterised by practice infrastructure owned and maintained by an entity such as a local council, university or other incorporated body, such that incoming general practitioners can execute both an 'easy entry' on recruitment and 'gracious exit' free of concern about return on capital investment.
